Projecting-lantern.



E. UNGER. PROJEGTING LANTERN.

I APPLIOATION FILED MAR.6,1913. 1,130,451, Patented Mar.2,1915

a SHEETS-SHfiRT 1 WITNESSES.

%W X 1 E716 st U nger W fi WQMQ ATTORNEY-Q INVENTOI? E. UNGER.

PROJ EOTI-N G LANTERN. APPLICATION FILED MAR.6,1913

l, 1 30,451 Patented Mar. 2,1915

3 SHEETS-SHEET 2- WITNESSES! INVENTOR 2/ f rcest U nge $4 2% )Mg Patented Mar. 2, 1915.

3 SHEETS SHBET 3.

WITNESSES.

5ifrictionally held in engagement therewith s. rare I I I nannsr or ents, or NEW YORK, Y.

r rice.

rnomormemnn'rnnn.

re eneration or Letters ratent. Patented Mar. 2 1915;

Application filed March 6, 1913.- Serial No. 752,292.

'ments in Projecting-Lanterns, of which the following is a specification.

My invention relates to a pro ectmg lantern and particularly relates to those lanterns in which the source of light is an electric arc.

The primary .object of my inventionis to provide an'inexpensivelantern having all the necessary adjustments now characterizing expensive devices of this character, but which is constructed of relatively few parts and these parts of the simplest con-' struction and assembled to perform the objects of a device ofthis character with a sufficient refinement of adjustment in the several parts for the general uses to whichthese lanterns are put.

The invention further consists, of other new and novel parts and combination of parts all as more fully hereinafter set forth.

Reference is to be had to the accompanying drawings in which similar reference characters indicate corresponding parts and in which- Figure 1 is a perspective view showing a preferred embodiment of my invention with the parts in collapsed position. Fig. 2 is a vertical longitudinal sectional view taken substantially through the center of the device shown in Fig. l, certain par-ts being in side elevation. vFig. 3 is a vertical transverse sectional' view taken on the line 33 of Fig. 2 looking forward or in the direction indicated by the arrows, and Fig. 4 is a similar view taken on the line 44 of F ig; 2 looking rearwardly or in the direction indicated by the arrows on this line.

Described more in detail my device comprises a base A preferably of relatively wide extent and of heavy material-so as to form a broad substantial unitary base for the device. Projecting centrally from above the top of this base is a pair of transmitting spaced apart lugs B preferably formed integral with the base A and having some resiliency, mounted between which lugs is the depending .co-aeting longitudinally extending tongue or disk 0 forming a relatively wide bearing with the lugs B and Users, a citiby means of a binding screw D or other suitable fastening device. The member C like the support 'A is of heavy material and is rigidly attached to and preferably forms an integral part of a wide bottom and narrow top band forming an inclosing frame E for the cylindrical condenserlcell.

downwardly and outwardly from the opposite lower sides thereof are'the depending long arms F having tubular outer portions G for the purpose hereinafter more fully disclosed. The front of the frame E is outlined by an outstanding rim H adapted to constitute a support for the slide carrying box I which box is adapted to contain a conventional form of slide frame J as is common with devices of this character.

In order to conveniently mount this slide carrying box I upon the frame Eso that the same may be conveniently dismounted or rotated in its own plane, there are extending from opposite lower sides of the rear face 10 of the box I a pair of outstanding. L shaped clips 11 a finger 12 of which is adapted to lap and bind against the rear face of the flange H. To lock the frame in its j I Formed integral w1th the frame E and extending adjusted position there is extending from the box I and preferably from the top l3 thereof an overhanging bracket '14, in a vertical bearing in the end 15 of which is mounted a thumb screw 16 which thumb screw is adapted to engage the top of'the frame E in rear of the flange H. By this construction it is seen that loosening the screw 16 of the box I can be rotated in its own plane about the axis of the cylinder as a center of rotation and when in the desired position the screw 16 may be brought into binding contact with the outside offrame E drawing the clips-l1 into firm engagement with the rim H. Should it be desired to entirely dismount the box I, the screws 16 may be rotated until the free end thereof can bedisengaged from the flange H and by dropping the box I the fingers 12 can be disengaged from the flange H. As shown in this embodiment of the invention the front of the box I carries the frustoconical hood or funnel 17, which when the device is collapsed into the position shown in Fig. 1 telescopes withinthe correspondill-3 having a plurality of field lenses controlled by the focusing screw 21 as is common with devices of this character. I

*Rigidly mounted in the tubular portions 5 G are a'pair of longitudinally extending open ended tubes 22 slidably mounted in which are the longitudinally extending rods 23 the forward ends of which are rigidly connected to the depending divergent legs 24 forminganintegral part of the casing IQLUQLiy this'cons'truction' it is'seen that the obje ctive casing 19 and its containing parts are mounted "in relatively long bearings formed by the tubes 22 and that they may gbe' imanually adjusted relative to the condenser and other portions of the lantern. The rods may be lockedf in position by any binding means,'a convenient device of this Y character being illustrated in Fig. 1 in which 0 the "end of one-of the tubes '22 1s splitand externally screw threaded which end is 29 adapted to accommodate an electrode,

hereinafter described, when the device is in its [fully collapsible position. [Further the top portionof this cylinder 26-is cut away as shown at 30 for a distance'from the top substantially half way to the bottom on each side in order to afiord a substantially semi-cylindricalopening for the insertion and withdrawal of the condenser lenses 31. The forward of the pair of condenser lenses shown is backed against an inwardly ex-* tension apertured plate 32 constituting 'the back-of thenbox l and the bottomof this lens is 'held dismountablyin position by means of. the forward end 33 of a holding clip 34 which clip is fastened by rivet 35 to the casing 26. The rear end of this clip 34 has an upturned edge 36. which co-acts with a longitudinally spaced upturned edge 37 on a plate 38 also held by the rivets 35, which edges 36 and 37 constitute a housing or pocket for the lower edge of the rear lens 31, which rear lens is mounted substantially midway in the opening 30 and is held in this position convenient for dismounting by means of the spring side clips 39 fastened to the-tube 26. By-this construction it is seen that the condenser lenses 31 are removably mounted in place without the necessity of any material adjustment of fastening means as is common with the similar devices now known. The opening 30 is conveniently closed by means of a band 40 telescopically and slidably mountedupon the cylinder and frictional engagementtherewith.

, Telescoping the cylinder 25 and preferthe top surface-thereof and ofiset from the outlet 28 so aslt o'prevent the emission of light from the arc hereinafter described and yet to provide a convenlent passage for the heatedair within the lamp house. The cylinder 41 has a rear closure or-wall 72 preferablyfa casting, the cylinder 41 and rear wall 72 constituting a lamp house for the electric arc or other source of light. This rear wall is preferablyof cast metal and has extending from opposite lower portions Tn devices of this character it is desirable to mount the electrodes adjustably in position so that they may be readily replaced and manipulated without expensive clamping and adjusting means and with this object in view ll provide an opening 46 centrally of the rear wall'72 and position in this opening a sleeve 47 which extends into the lamp house for some material distance and has a longitudinally split inner end 48 adapted to frictionally bind the carbon or other electrode 49, which extends therethrough from the outside of the wall 72. The rear end of the tube 47 extends to the outside of the opening 46 and terminates in a laterally extending reinforcing head or plate 50 closing the opening 46, which head is insulated from the rear wall 72 by meansof an'insulation 51 in the form of a mica or, some similar plate and the metal plate 50 is held in position by means of the in sulated screws 52. Abinding post 53 is in screw threaded engagement with the plate 50 and constitutes a means for electrically- .attaching oneof the electric leads 54 to the electrode 49. The electrode 49 may be made of carbon or any other suitable conducting material and for the purpose of manipulating the same there is in frictional engagement with the outer end thereof an insulated cap or handle 74, which cap may be readily withdrawn and inserted on the end of a new carbon.

Mounted upon the outside of the cylinder 41 and extending through an opening 55 in i By this construction it mat er fastened thereto by means of the insulated bolts 58; the plate itself is insulated from the bolts and from the casing 41 bymeans of the insulating material 59 disposed therebetween. The outer end of the electrode 56 .is capped by an insulating handle 60 corres ending to the handle 7 4. Mounted upon t e plate 57 is the bindingpost 70 to which is attached the electric lead 61 of opposite polarity to the lead'54. The split sleeves 47 and 56 gently bind their respective electrodes so that by looking through the ruby glass covering opening 62 in the wall 72the operator is enabled to observe and adjust the position of the electrodes relative to each other to attain the desired arc; By 1- ing the screw 63 carried by one of the sleeves 44 the lamp house as a whole, carryin with it the source of light, may be adjus relative to the lens 31 and by loosening the hinding nut or ring 25 the frameor carriage 19 carrying the objective lens may be adjusted relative to the stationary condenser lens. It

' is noted from this disclosure that applicant needs but one base A and the condenser which is relatively stationa is mounted pivotally upon this base there y afiording a convenient means for adj ustmentin avertical' plane. At the same time the rods 22 extend forwardly and rearwardlyto afi'ord a long bearing for the objective casing 19, this hearing extending entirely through the tube 22 which also afl'ords a long extensive longitudinal bearing for the sleeve 44 which in turn supports the lamp house.

It is noted that the slide carrying box I is conveniently 3 ing ease of a ustment by merely loosening the screw 16 and with a further adjustment of the screw 16 the entire box may be conveniently withdrawn from the condenser casing. o

The means for mounting the carbon may be readily and cheaply constructed being merely a split end and headed metal tube 3 and particular attention is called to the extent to which the source of light may be spaced from the objective lens and the com-' mounted in position affordpaotness with which the device can be collapsed for shipment or store Having thus described my invention, what I claim to be new and desire to protect by Letters Patent is 1. A lamp house for projecting near-5s comprising a sheet metal cylinder open at one end, a rigid plate attached to the'cylinder and closing the other end of the same,

said plate having a pair ofspaced extensions projecting below the cylinder, long parallel tubes fixed to said extensions, rods telescoping within said tubes for supporting the lamp house,means for slidably'mounting an electrode in position in 'saidplateand other means adjacent said plate for mounting a coacting electrode 1n the wall of said sheet metal cylinder, said last named means including a plate afiiiied to the wall to electrode transmit strains on the coactinfg the sheet over a relatively large area 0 metal wall.

2. In a projecting lantern, a lamp house comprising a light sheet-metal cylinder, a

relatively heavv strain resisting cast metal m wall for oneend of said cylinder, means at tached tosaid cast metal wall for slidably mountin said house, an electrode held adjustab e position in the rear wall and a second electrode'extendingthrough and held in said sheet metal cylinder and means rein forcing said sheet metal cylinder aboutsaid secondelectrodeto distribute thestrains-on q '90 said second electrode.

Y 3. A lamp house for projecting lanterns comprising a relatively heavy band having depending arms with tubular ortions, longitudinal rods mounted in-sai tubular portions and extending rearwardly therefrom, a sheet metal tube supported from said band and extending rearwardly'there'from," a sheet .metal cylinder telescoping said sheet metal tube and movable relative thereto, a rear closing wall for said tube fixed to said cylinder, long sleeves fixed to. said rear wall and slidably mounted on the rearwardly ex tending portion of-said longitudinal rods, said tube and cylinder being independently supported and means integral with the band for supporting the latter. In witness whereof I- have hereunto set my hand in the presence. of two witnesses.

' ERNEST UNGER. Witnesses': v

WARREN S. ORION,

P A. Lam. 

